15 June 2016, 00:23 | #321 |
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SFD-321B /LFEB REV. T9 Pcb Rev (PCB REV WT-09R-A) Mod Howto
I succesfully modded this drive so I made a little Howto. I hope it's useful.
This drive works in only HD mode so It doesn’t have the HD sensor. The controller is the same from older revisions, so I found a method to force the DD density. To Force double density on the drive: Very important ! To avoid short circuit you must remove J22 0 Ohm Resistor Now you have to do the usual actions as in the previous revisions: • Send DC signal to pin 2 • Send RDY signal to pin 34 • Set drive to DS0 Because there is not any jumper to solder/desolder, you have to cut track versus pin 12 and reroute the signal to pin 10 to set the drive to DS0. The Final Result It works very well and and since there is no sensor for density select, You don’t have to cover the hole in HD floppy disks. Last edited by Franco; 15 June 2016 at 14:02. Reason: Images missing |
29 December 2016, 10:01 | #322 |
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hi !
New drive to test ! CITIZEN Z1DE-62B Found nothing on it : Any Idea ? https://i37.servimg.com/u/f37/16/40/49/27/img_2020.jpg https://i37.servimg.com/u/f37/16/40/49/27/img_2021.jpg |
29 December 2016, 11:40 | #323 |
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Seems like JP10 and 11 would be DS1/0 (pins 12 and 14 at the connector)
Both pins 2 and 34 also have promising looking jumpers around them, potentially easy to measure out which one is which by making a quick test harness to toggle the motor, select and step signals. Good luck! |
29 December 2016, 11:59 | #324 |
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don't really help me lol...
what can i test easily ? |
29 December 2016, 15:12 | #325 |
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Foul, see attachment
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29 December 2016, 15:13 | #326 |
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Excellent !!! modif in progress...
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26 January 2017, 20:11 | #327 |
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Is there anything that can be used to replace a Panasonic JU-253-033P for an A500? I have the original drive but it's beyond repair, so if I could use another drive with the drive button from the broken drive...
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29 January 2017, 03:12 | #328 |
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Um yeah, every single drive that is in this thread.
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29 January 2017, 08:05 | #329 |
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30 January 2017, 00:08 | #330 |
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Yep exactly, an alternative working drive that can use the eject button from the A500 and fit seamlessly into my A500 case
Edit: sorry yeah, my original question was really badly written! |
30 January 2017, 09:10 | #331 |
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What I have done is get a Chinon FZ-357 and mod it and get an Amiga eject button from an old Amiga drive on eBay. Airey36 sells them.
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21 February 2017, 05:15 | #332 |
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I want to thank you so much!
While I own an Amiga 1000 as well, I actually found this thread while trying to solve a problem I had with my Atari 1040 ST drive replacement with this same Citizen floppy drive... without this thread I was lost. I wrote up my ordeal here for those interested: http://fetchrex.com/2017/02/12/oh-no...-drive-issues/ Thanx to everyone on this great site! Russ |
21 February 2017, 10:56 | #333 |
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That's great, but now I feel a bit sorry for seeing an old ST fall prey to the Dremel…
Try to swap capacitors on your old Epson, that has cured drives for me. |
21 February 2017, 16:00 | #334 | |
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Quote:
Unfortunately though it doesn't work. My drive has a different IC which I believe to be a drive motor controller. This one is a 30-pin, while yours is a 20-pin IC. I can't find any datasheets for either of the two ICs, so I can't figure out what signal you are sending to the controller pin 9? |
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02 March 2017, 12:32 | #335 |
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Mitsumi D353M3D
Hi,
another disk drive to test: MITSUMI D353 M3D. I don't know where to connect pin 34. Any ideas? |
05 March 2017, 18:38 | #336 | |
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Quote:
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09 March 2017, 16:47 | #337 |
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Here's my aproach to YE-DATA YD-702D-6638D
I haven't tried it yet, later this evening i'll give it a shot and see how it goes. |
09 March 2017, 20:49 | #338 |
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Just tested the above mod, unfortunaly it didn't work Any ideas?
But not everything are bad news, just sucessfully moded this one, the Mitsubishi MF355F-250MG, but you can't use anticlick on classic workbench because it won't work with it enabled Beside that it works 100% |
10 March 2017, 09:10 | #339 |
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Why do you guys jumper Read Data to Ready? That's not a very nice hack in my opinion. The Ready signal is supposed to be constantly low, not pulsing.
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10 March 2017, 09:40 | #340 |
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